ArtPAL paintmate boards are manufactured using double primed acid free titanium acrylics to give you smooth finish and allow heavy multi layered paints. It can be used for all the painting techniques from oils, acrylics to gouache. Our stretched canvases are mounted on high quality rigid pinewood frame with appropriate central support (2 in large frames and 1 in medium frame). All stretched canvases are supported by two 3/4" deep perfectly angled pinewood frames.